The FAG B7028-C-T-P4S-UL is a high-precision angular contact ball bearing designed for demanding spindle applications. This single-row bearing features a 28 mm bore diameter, 47 mm outer diameter, and 9 mm width. It is part of the 70 series, known for its high speed capability and rigidity. The 'C' indicates a contact angle of 15 degrees, 'T' signifies a phenolic resin cage, and 'P4S' denotes a precision class higher than P4, suitable for very high rotational speeds and accuracy. The 'UL' designation means it is universally ground for paired mounting in any arrangement (O, X, or tandem) with light preload, ensuring optimal performance in machine tool spindles and other precision rotating equipment.